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Eliminate the .eh_frame sections from the aarch64 vmlinux and kernel modules 

By default the aarch64 gcc generates .eh_frame sections.  Unlike
.debug_frame sections, the .eh_frame sections are loaded into memory
when the associated code is loaded.  On an example kernel being built
with this default the .eh_frame section in vmlinux used an extra 1.7MB
of memory.  The x86 disables the creation of the .eh_frame section.
The aarch64 should probably do the same to save some memory.

Signed-off-by: William Cohen <wcohen@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
William Cohen 2016-01-21 22:56:26 -05:00 committed by Will Deacon
parent b3122023df
commit 728dabd6d1
1 changed files with 1 additions and 0 deletions
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arch/arm64/Makefile
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@ -27,6 +27,7 @@ $(warning LSE atomics not supported by binutils)
endif
KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr)
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_AFLAGS += $(lseinstr)
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)